Kinetics, equilibrium and mechanism of Cu2+, Ni2+ and Zn2+ ions biosorption using wheat straw

Application of green seaweed biomass for MoVI sorption from contaminated waters. Kinetic, thermodynamic and continuous sorption studies

“…the number of positively charged centers is equal to the number of negatively charged centers. If pH < pHzpc the sorbent surface area is positively charged, and if pH > pHzpc, the sorbent surface area is negatively charged [47]. The point of zero charge (pHzpc) represents the value at which the curve DpH = f (pHi) intersects pHi axis (see Fig.…”

Agricultural Waste

“…The optimal pH for adsorption was 6 and Pseudo-2nd-order model was more applicable. The kinetic and mechanism of adsorption of Cu 2+ , Zn 2+ and Ni 2+ ions were investigated (Gorgievski et al 2013). The maximum adsorption capacity for Cu 2+ was 5 m g/g, while 2.5 mg/g and 3.25 mg/g for Ni 2+ and Zn 2+ respectively.…”

Removal of Ag(I) and Zn(II) ions from single and binary solution using sulfonated form of gum arabic-powdered mushroom composite hollow semispheres: Equilibrium, kinetic, thermodynamic and ex-situ studies

“…Biosorption has emerged as a promising and eco-friendly technology for the removal of metal ions from aqueous environment owing to the ease of handling, low cost, high efficiency, minimization of chemical and biological sludge, no additional nutrient requirement, regeneration of biosorbent and possibility of metal recovery (Gorgievski et al, 2013;Ullah et al, 2013;Mishra et al, 2014;Coelho et al, 2014;Das et al, 2014b;Bozic et al, 2013;Zuo et al, 2012;Hanif et al, 2009;Dhir and Srivastava, 2011;Verma et al, 2013). In recent years, various plant gum viz.…”